There are many reasons to use accelerated testing and just as many ways to conduct the testing. Matching and balancing cost, risk, and results takes some skill. Let’s talk about the key elements to consider so you select the best approach for your test. There are times when we have to evaluate the reliability performance of a system or component. Accelerated testing is a useful tool, or rather set of tools, that allow us to cheat time. Accelerated testing ranges from simple time compression methods to complex modeling building techniques to degradation tracking. Each approach has benefits and issues. Let’s explore the range of possibilities and how you can select the right approach for each test. Getting meaningful results is important, as is minimizing testing costs, and getting results on time. Considering your constraints and objectives is one way to match the approach to your situation to create the right test plan. More a discussion then a lecture, this free webinar is our chance to talk about accelerated testing. This Accendo Reliability webinar originally broadcast on 9 December 2014.

1. ALT
Approaches
Fred Schenkelberg

3. How long will it
last?Estimating reliability performance

4. Customer Expectations

5. Financial
Planning

6. Making
Decisions

7. Do you need
to know life
time
distributions?

8. ALT
How to cheat time?

9. Time
Compression

10. Build a Model

11. Given a Model
Peck’s
Relationship

12. Step Stress

13. Degradation

14. Best if you Know the Failure
Mechanism(s)
time
CumulativeProbabilityofFailure

15. Do you have
models for top
failure
mechanisms?

16. Selection Criteria
How to select the right approach?

17. Selection
Criteria
Meaningful Results

18. Selection
Criteria
Meaningful Results
Measures

19. Threshold
Unrelated
Surrogate
Direct
Meaningful Results:
Measures

20. Meaningful Results
Measures
Cost
Selection
Criteria

21. Threshold
Prohibitive
Budget
Inexpensive
Cost

22. Meaningful Results
Measures
Cost
Precision
Duration
Samples
Selection
Criteria

23. What criteria
do you use?

24. An Example
Which approach would you use?

25. Example
Case
Capacitor
24/7 operation
High voltage load
Outdoor
environment
Insulation
breakdown failure
mechanism
Let’s consider some
ALT options

26. Discussion Points
Criteria
• Duration
• Precision
• Measures
• Cost
• Realistic
• Samples
ALT Approaches
• Time Compression
• Build a Model
• Assume a Model
• Step Stress
• Degradation

27. Who should
be involved
selecting the
approach?

28. Create Meaningful Tests
1. Recognize the risks
1. Identify select tests
1. Estimate Value
1. Determine Conditions
1. Document Success

29. Reliability Value
• Join Accendo
Reliability
• Download a copy
directly

30. What are your
Questions?
Thanks for participating.